Answer:
905
Step-by-step explanation:
A89=25+(88-1)10
A89=25-880=905
Might be wrong but I tried
The 89th term would be 895.
There is a pattern of adding 10 each time. Notice that the 5 at the end doesn't change and that the first number continues (i.e. 2, 3, 4, 5, 6). All you have to do is add an 89 in front of the 5 and that is your answer, 895.
5
According to the described rule, we have
We can see the pattern
In other words, for all
Now,
80 questions
100%/20%=5%
5×16=80
138
70 + 32 = 102
102 + 36 = 138
138 + 40 = 178
178 + 44 = 222
7
The 6 is in the tenths place and the 7 is in the ones place.